FDIC-insured bank
Ergo Bank
Bank headquartered in Markesan, Wisconsin, part of FS BANCSHARES INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 730 N Margaret St Markesan, WI 53946 |
| County | Green Lake |
| Website | www.ergobank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 10004 |
| Federal Reserve RSSD ID | 599643 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | FS BANCSHARES INC |
| Domestic offices | 6 |
| Financials as of | June 30, 2026 |
Routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.ergobank.com.
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Offices nearest to headquarters
| Ergo Bank main office Markesan, WI |
730 N Margaret St, 53946 |
| 314 West State Street Branch Fox Lake, WI |
314 West State Street, 53933 |
| Lomira Branch Lomira, WI |
250 Main Street, 53048 |
| Kendall Branch Kendall, WI |
102 E South Railroad St, 54638 |
| Wilton Branch Wilton, WI |
406 Main Street, 54670 |
| Norwalk Branch Norwalk, WI |
108 Main St, 54648 |